A new study of glacial moraines in southern Chile offers a better understanding of glaciation in the region during the period prior to the Last Glacial Maximum. By analyzing beryllium isotopes in glacial till, the researchers found that the period of Marine Isotope Stage 3, often described globally as an interstadial and well-mapped only in polar regions, experienced significant climate variability. This climatic variability was born out by relatively rapid responses at the century and millennial scale by the Patagonian Ice Sheet. Read the full study here.
Climate History Network